However, the protesters, linked together with sleeping dragons, blocked access to the building.

Protesters use the devices to link themselves together to block a particular area.

In this case, police said they were blocking the building’s entrance and exit and its driveway.

To use sleeping dragons, people place their hands inside a pipe and lock their arms and wrists together using handcuffs, chains, carabiners, or other methods. Police said the pipe is often wrapped in materials that make it extremely difficult to cut.